14in Hi-Perf Air Cleaner W/ Plain Nut

The PROFORM 14in Hi-Performance Air Cleaner with Plain Nut is designed for carbureted engines and classic hot rod builds, focusing on maximizing intake flow and engine response. This air cleaner assembly is a high-performance alternative to restrictive stock air boxes, providing improved volumetric efficiency by reducing air intake restriction at the carburetor inlet.

Engineered with a full-diameter filter element, this air cleaner reduces turbulence and heat soak compared to smaller designs, leading to a cooler, denser intake charge and measurable torque improvement in the low-to-mid RPM band. The plain nut top allows for tool-free or minimal-tool access for easy filter changes and maintenance, while the gasket sealing ensures zero vacuum leaks.

This air cleaner is ideal for both single and dual carburetor applications, making it suitable for street engines, weekend cruisers, and full engine swaps. Its durable construction withstands fuel vapor and engine heat exposure, ensuring reliability for high-mileage enthusiasts who require extended service intervals without frequent maintenance.